The &dollar; entities are not seen
as dollar signs by the version control system and so the
string is not expanded into a version string.

When a PO file is created, the
&dollar; entities used in examples are
replaced with actual dollar signs. The resulting literal
$FreeBSD$ string will be
wrongly expanded by the version control system when the file
is committed.

The same technique as used in the English documents can be
used in the translation. The &dollar;
is used to replace the dollar sign in the translation entered
into the PO editor: